[aprssig] Where to buy new digipeater?

Ken Koster n7ipb at wetnet.net
Wed Sep 19 10:50:04 EDT 2018

On Tuesday, September 18, 2018 8:36:25 PM PDT Jason KG4WSV wrote:
> On Tue, Sep 18, 2018 at 9:44 PM khufford <khufford at atlanticbb.net> wrote:
> > Raspbeery pi 3 with a TNC-X CARD.
> The TNC-X is good, but the pi is unimpressive for reliability.  I use
> a pi to interface a basic UPS so I can monitor it along with the rest
> of my enterprise equipment.  Every few weeks it simply locks up, and
> all it does is run nut (ups interfacing) and NRPE (accepts connections
> from a nagios server to query the ups status). It's running the
> recommended ubuntu-based distro and patches are up to date. It
> requires physically touching it to get it back on the network. I've
> monitored multiple units for basic wifi connectivity, and wifi will
> drop out for no reason on a very regular basis (at least once a day),
> and this is an enterprise network, not a cheap consumer WAP.  I don't
> think I'd go the pi route unless it was easily and conveniently
> accessible for monitoring and resets.

I have four Rpi running at remote repeater sites, no lockups in over a year of operating 
despite 106F temperatures during the summer and sub freezing during the winter.  There 
are hundreds and hundreds of RPi running repeaters (using SvxLink or AllstarLink) and the 
reliability is excellent.

  Use a good quality big SD card (32G)
  Run raspian instead of Ubuntu,  I suspect it does a lot more logging to disk
	than raspian does. Many of us put logging on either other devices or in my
        case a ram disk.  
  Make sure you have good stable power and don't use the crappy wall warts.
  For remote sites it's best to use one of the Rpi UPS hats.  I use one that
  powers the whole RPi from 12v and provides for graceful shutdown.

An RPi makes an excellent platform for a digi and is the only thing I recommend when 
people ask.  The performance of software modems like Direwolf is outstanding and seems to 
exceed that of any hardware modem.
Ken - N7IPB
Email: n7ipb at wetnet.net
JID: n7ipb at jabber.wetnet.net
SvxLink Repeaters: http://pnw220.wetnet.net
PGP Sig: F42B EF90 3CD3 31C7 3056  122E 993A 7B2E 5138 C42A 
“Contrariwise,' continued Tweedledee, 'if it was so, it might be; 
and if it were so, it would be; but as it isn't, it ain't. That's logic.” 
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